Home / 378,968.91-522,986.60-215,616.41

Finding the Fourth Proportional to 378,968.91, 522,986.60 and 215,616.41

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Solution

The fourth proportional to 378,968.91, 522,986.60 and 215,616.41 is: 297,556.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,968.91 : 522,986.60 = 215,616.41 : x
  2. Step 2: Convert to fraction form
    378,968.91/522,986.60 = 215,616.41/x
  3. Step 3: Cross multiply
    378,968.91x = 522,986.60 × 215,616.41
  4. Step 4: Simplify right side
    378,968.91x = 112,764,493,170.11
  5. Step 5: Solve for x
    x = 112,764,493,170.11/378,968.91
  6. Step 6: Final answer
    x = 297,556.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.